Note 8 - Non-Wholly Owned Entities (Tables)

3 Months Ended

Mar. 31, 2013

Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Table Text Block]

	March 31, 2013						December 31, 2012						March 31, 2012
In millions	Consolidated		SouthStar				Consolidated		SouthStar				Consolidated		SouthStar
Current assets	$	2,361	$	143	6	%	$	2,668	$	201	8	%	$	2,022	$	149	7	%
Long-term assets and other deferred debits		11,579		10	-			11,473		10	-			11,217		9	-
Total assets	$	13,940	$	153	1	%	$	14,141	$	211	1	%	$	13,239	$	158	1	%
Current liabilities	$	3,060	$	51	2	%	$	3,338	$	62	2	%	$	2,348	$	52	2	%
Long-term liabilities and other deferred credits		7,339		-	-			7,368		-	-			7,465		-	-
Total Liabilities		10,399		51	1			10,706		62	1			9,813		52	1
Equity		3,541		102	3			3,435		149	4			3,426		106	3
Total liabilities and equity	$	13,940	$	153	1	%	$	14,141	$	211	1	%	$	13,239	$	158	1	%

Schedule of Variable Interest Entities [Table Text Block]

In millions	2013		2012
Operating revenues	$	250	$	215
Operating expenses
Cost of goods sold		164		133
Operation and maintenance		18		19
Depreciation and amortization		1		-
Taxes other than income taxes		-		1
Total operating expenses		183		153
Operating income	$	67	$	62